2016-04-04 17:28:49 +02:00
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use map_module
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BEGIN_PROVIDER [ type(map_type), two_body_dm_ab_map ]
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implicit none
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BEGIN_DOC
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! Map of the two body density matrix elements for the alpha/beta elements
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END_DOC
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integer(key_kind) :: key_max
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integer(map_size_kind) :: sze
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2016-04-17 22:25:25 +02:00
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use map_module
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2016-04-04 17:28:49 +02:00
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call bielec_integrals_index(mo_tot_num,mo_tot_num,mo_tot_num,mo_tot_num,key_max)
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sze = key_max
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call map_init(two_body_dm_ab_map,sze)
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print*, 'two_body_dm_ab_map initialized'
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END_PROVIDER
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subroutine insert_into_two_body_dm_ab_map(n_product,buffer_i, buffer_values, thr)
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use map_module
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implicit none
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BEGIN_DOC
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! Create new entry into two_body_dm_ab_map, or accumulate in an existing entry
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END_DOC
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integer, intent(in) :: n_product
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integer(key_kind), intent(inout) :: buffer_i(n_product)
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real(integral_kind), intent(inout) :: buffer_values(n_product)
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real(integral_kind), intent(in) :: thr
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call map_update(two_body_dm_ab_map, buffer_i, buffer_values, n_product, thr)
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end
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double precision function get_two_body_dm_ab_map_element(i,j,k,l,map)
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use map_module
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implicit none
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BEGIN_DOC
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! Returns one value of the wo body density matrix \rho_{ijkl}^{\alpha \beta} defined as :
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! \rho_{ijkl}^{\alpha \beta } = <\Psi|a^{\dagger}_{i\alpha} a^{\dagger}_{j\beta} a_{k\beta} a_{l\alpha}|\Psi>
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END_DOC
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PROVIDE two_body_dm_ab_map
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integer, intent(in) :: i,j,k,l
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integer(key_kind) :: idx
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type(map_type), intent(inout) :: map
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real(integral_kind) :: tmp
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PROVIDE two_body_dm_in_map
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!DIR$ FORCEINLINE
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call bielec_integrals_index(i,j,k,l,idx)
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!DIR$ FORCEINLINE
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call map_get(two_body_dm_ab_map,idx,tmp)
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get_two_body_dm_ab_map_element = dble(tmp)
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end
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subroutine get_get_two_body_dm_ab_map_elements(j,k,l,sze,out_val,map)
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use map_module
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implicit none
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BEGIN_DOC
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! Returns multiple elements of the \rho_{ijkl}^{\alpha \beta }, all
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! i for j,k,l fixed.
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END_DOC
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integer, intent(in) :: j,k,l, sze
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double precision, intent(out) :: out_val(sze)
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type(map_type), intent(inout) :: map
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integer :: i
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integer(key_kind) :: hash(sze)
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real(integral_kind) :: tmp_val(sze)
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PROVIDE two_body_dm_in_map
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do i=1,sze
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!DIR$ FORCEINLINE
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call bielec_integrals_index(i,j,k,l,hash(i))
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enddo
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if (key_kind == 8) then
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call map_get_many(two_body_dm_ab_map, hash, out_val, sze)
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else
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call map_get_many(two_body_dm_ab_map, hash, tmp_val, sze)
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! Conversion to double precision
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do i=1,sze
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out_val(i) = dble(tmp_val(i))
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enddo
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endif
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end
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BEGIN_PROVIDER [ logical, two_body_dm_in_map ]
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implicit none
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BEGIN_DOC
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! If True, the map of the two body density matrix alpha/beta is provided
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END_DOC
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two_body_dm_in_map = .True.
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call add_values_to_two_body_dm_map(full_ijkl_bitmask_4)
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END_PROVIDER
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subroutine add_values_to_two_body_dm_map(mask_ijkl)
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use bitmasks
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use map_module
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implicit none
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BEGIN_DOC
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! Adds values to the map of two_body_dm according to some bitmask
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END_DOC
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integer(bit_kind), intent(in) :: mask_ijkl(N_int,4)
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integer :: degree
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PROVIDE mo_coef psi_coef psi_det
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integer :: exc(0:2,2,2)
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integer :: h1,h2,p1,p2,s1,s2
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double precision :: phase
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double precision :: contrib
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integer(key_kind),allocatable :: buffer_i(:)
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double precision ,allocatable :: buffer_value(:)
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integer :: size_buffer
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integer :: n_elements
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integer :: occ(N_int*bit_kind_size,2)
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integer :: n_occ_ab(2)
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integer :: i,j,k,l,m
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size_buffer = min(mo_tot_num*mo_tot_num*mo_tot_num,16000000)
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allocate(buffer_i(size_buffer),buffer_value(size_buffer))
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n_elements = 0
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do i = 1, N_det ! i == |I>
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call bitstring_to_list_ab(psi_det(1,1,i), occ, n_occ_ab, N_int)
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do j = i+1, N_det ! j == <J|
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call get_excitation_degree(psi_det(1,1,i),psi_det(1,1,j),degree,N_int)
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if(degree>2)cycle
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call get_excitation(psi_det(1,1,i),psi_det(1,1,j),exc,degree,phase,N_int)
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call decode_exc(exc,degree,h1,p1,h2,p2,s1,s2)
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if(degree==2)then ! case of the DOUBLE EXCITATIONS ************************************
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if(s1==s2)cycle ! Only the alpha/beta two body density matrix
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! <J| a^{\dagger}_{p1 s1} a^{\dagger}_{p2 s2} a_{h2 s2} a_{h1 s1} |I> * c_I * c_J
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2016-04-17 22:25:25 +02:00
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if(h1>p1)cycle
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if(h2>p2)cycle
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! if(s1.ne.1)cycle
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2016-04-04 17:28:49 +02:00
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n_elements += 1
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2016-04-17 22:25:25 +02:00
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contrib = psi_coef(i,1) * psi_coef(j,1) * phase
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2016-04-04 17:28:49 +02:00
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buffer_value(n_elements) = contrib
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!DEC$ FORCEINLINE
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2016-04-17 22:25:25 +02:00
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! call mo_bielec_integrals_index(h1,p1,h2,p2,buffer_i(n_elements))
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2016-04-04 17:28:49 +02:00
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call mo_bielec_integrals_index(h1,h2,p1,p2,buffer_i(n_elements))
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2016-04-17 22:25:25 +02:00
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! if (n_elements == size_buffer) then
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! call insert_into_two_body_dm_ab_map(n_elements,buffer_i,buffer_value,&
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! real(mo_integrals_threshold,integral_kind))
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! n_elements = 0
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! endif
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2016-04-04 17:28:49 +02:00
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else ! case of the SINGLE EXCITATIONS ***************************************************
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cycle
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2016-04-04 17:28:49 +02:00
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2016-04-17 22:25:25 +02:00
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! if(s1==1)then ! Mono alpha :
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! do k = 1, elec_beta_num
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! m = occ(k,2)
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! n_elements += 1
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! buffer_value(n_elements) = contrib
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! ! <J| a^{\dagger}_{p1 \alpha} \hat{n}_{m \beta} a_{h1 \alpha} |I> * c_I * c_J
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! call mo_bielec_integrals_index(h1,m,p1,m,buffer_i(n_elements))
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! if (n_elements == size_buffer) then
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! call insert_into_two_body_dm_ab_map(n_elements,buffer_i,buffer_value,&
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! real(mo_integrals_threshold,integral_kind))
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! n_elements = 0
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! endif
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! enddo
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! else ! Mono Beta :
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! do k = 1, elec_alpha_num
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! m = occ(k,1)
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! n_elements += 1
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! buffer_value(n_elements) = contrib
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! ! <J| a^{\dagger}_{p1 \beta} \hat{n}_{m \alpha} a_{h1 \beta} |I> * c_I * c_J
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! call mo_bielec_integrals_index(h1,m,p1,m,buffer_i(n_elements))
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! if (n_elements == size_buffer) then
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! call insert_into_two_body_dm_ab_map(n_elements,buffer_i,buffer_value,&
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! real(mo_integrals_threshold,integral_kind))
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! n_elements = 0
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! endif
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! enddo
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! endif
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2016-04-04 17:28:49 +02:00
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endif
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enddo
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enddo
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print*,'n_elements = ',n_elements
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call insert_into_two_body_dm_ab_map(n_elements,buffer_i,buffer_value,&
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real(mo_integrals_threshold,integral_kind))
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2016-04-17 22:25:25 +02:00
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call map_unique(two_body_dm_ab_map)
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deallocate(buffer_i,buffer_value)
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2016-04-04 17:28:49 +02:00
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end
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BEGIN_PROVIDER [double precision, two_body_dm_ab_diag, (mo_tot_num, mo_tot_num)]
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implicit none
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integer :: i,j,k,l,m
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integer :: occ(N_int*bit_kind_size,2)
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integer :: n_occ_ab(2)
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double precision :: contrib
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BEGIN_DOC
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! two_body_dm_ab_diag(k,m) = <\Psi | n_(k\alpha) n_(m\beta) | \Psi>
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END_DOC
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2016-04-17 22:25:25 +02:00
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2016-04-04 17:28:49 +02:00
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two_body_dm_ab_diag = 0.d0
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do i = 1, N_det ! i == |I>
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call bitstring_to_list_ab(psi_det(1,1,i), occ, n_occ_ab, N_int)
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contrib = psi_coef(i,1)**2
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do j = 1, elec_beta_num
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k = occ(j,2)
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do l = 1, elec_alpha_num
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m = occ(l,1)
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two_body_dm_ab_diag(k,m) += 0.5d0 * contrib
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two_body_dm_ab_diag(m,k) += 0.5d0 * contrib
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2016-04-04 17:28:49 +02:00
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enddo
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enddo
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enddo
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END_PROVIDER
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2016-04-17 22:25:25 +02:00
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BEGIN_PROVIDER [double precision, two_body_dm_ab_big_array, (n_act_orb,n_act_orb,n_act_orb,n_act_orb)]
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implicit none
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integer :: i,j,k,l,m
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integer :: degree
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PROVIDE mo_coef psi_coef psi_det
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integer :: exc(0:2,2,2)
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integer :: h1,h2,p1,p2,s1,s2
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double precision :: phase
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double precision :: contrib
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integer :: occ(N_int*bit_kind_size,2)
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integer :: n_occ_ab(2)
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two_body_dm_ab_big_array = 0.d0
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BEGIN_DOC
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! The alpha-beta energy can be computed thanks to
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! sum_{h1,p1,h2,p2} two_body_dm_ab_big_array(h1,p1,h2,p2) * (h1p1|h2p2)
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END_DOC
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do i = 1, N_det ! i == |I>
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call bitstring_to_list_ab(psi_det(1,1,i), occ, n_occ_ab, N_int)
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do j = i+1, N_det ! j == <J|
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call get_excitation_degree(psi_det(1,1,i),psi_det(1,1,j),degree,N_int)
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if(degree>2)cycle
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call get_excitation(psi_det(1,1,i),psi_det(1,1,j),exc,degree,phase,N_int)
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call decode_exc(exc,degree,h1,p1,h2,p2,s1,s2)
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2016-04-21 23:59:50 +02:00
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! if(i==3.or.j==3)then
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! print*,'i,j = ',i,j
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! call debug_det(psi_det(1,1,i),N_int)
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! call debug_det(psi_det(1,1,j),N_int)
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! print*,degree,s1,s2
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! print*,h1,p1,h2,p2
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! print*,phase
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! pause
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! endif
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2016-04-17 22:25:25 +02:00
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contrib = 0.5d0 * psi_coef(i,1) * psi_coef(j,1) * phase
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2016-04-21 23:59:50 +02:00
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! print*,'coucou'
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! print*,'i,j = ',i,j
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! print*,'contrib = ',contrib
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! print*,h1,p1,h2,p2
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! print*,'s1,s2',s1,s2
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! call debug_det(psi_det(1,1,i),N_int)
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! call debug_det(psi_det(1,1,j),N_int)
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! pause
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2016-04-17 22:25:25 +02:00
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if(degree==2)then ! case of the DOUBLE EXCITATIONS ************************************
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if(s1==s2)cycle ! Only the alpha/beta two body density matrix
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! <J| a^{\dagger}_{p1 s1} a^{\dagger}_{p2 s2} a_{h2 s2} a_{h1 s1} |I> * c_I * c_J
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call insert_into_two_body_dm_big_array( two_body_dm_ab_big_array,n_act_orb,n_act_orb,n_act_orb,n_act_orb,contrib,h1,p1,h2,p2)
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else if(degree==1)then! case of the SINGLE EXCITATIONS ***************************************************
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if(s1==1)then ! Mono alpha :
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do k = 1, elec_beta_num
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m = occ(k,2)
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! <J| a^{\dagger}_{p1 \alpha} \hat{n}_{m \beta} a_{h1 \alpha} |I> * c_I * c_J
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call insert_into_two_body_dm_big_array( two_body_dm_ab_big_array,n_act_orb,n_act_orb,n_act_orb,n_act_orb,contrib,h1,p1,m,m)
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enddo
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else ! Mono Beta :
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do k = 1, elec_alpha_num
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m = occ(k,1)
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! <J| a^{\dagger}_{p1 \beta} \hat{n}_{m \alpha} a_{h1 \beta} |I> * c_I * c_J
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call insert_into_two_body_dm_big_array(two_body_dm_ab_big_array,n_act_orb,n_act_orb,n_act_orb,n_act_orb,contrib,h1,p1,m,m)
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enddo
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endif
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endif
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enddo
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enddo
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print*,'Big array for density matrix provided !'
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END_PROVIDER
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subroutine insert_into_two_body_dm_big_array(big_array,dim1,dim2,dim3,dim4,contrib,h1,p1,h2,p2)
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implicit none
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integer, intent(in) :: h1,p1,h2,p2
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integer, intent(in) :: dim1,dim2,dim3,dim4
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double precision, intent(inout) :: big_array(dim1,dim2,dim3,dim4)
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double precision :: contrib
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2016-04-18 20:49:49 +02:00
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! Two spin symmetry
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big_array(h1,p1,h2,p2) += contrib
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big_array(h2,p2,h1,p1) += contrib
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! Hermicity : hole-particle symmetry
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big_array(p1,h1,p2,h2) += contrib
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big_array(p2,h2,p1,h1) += contrib
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2016-04-17 22:25:25 +02:00
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end
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2016-04-17 23:30:04 +02:00
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2016-04-18 20:49:49 +02:00
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double precision function compute_extra_diag_two_body_dm_ab(r1,r2)
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2016-04-17 23:30:04 +02:00
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implicit none
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2016-04-21 23:59:50 +02:00
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double precision, intent(in) :: r1(3),r2(3)
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2016-04-17 23:30:04 +02:00
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integer :: i,j,k,l
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double precision :: mos_array_r1(mo_tot_num),mos_array_r2(mo_tot_num)
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double precision :: contrib
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2016-04-18 20:49:49 +02:00
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compute_extra_diag_two_body_dm_ab = 0.d0
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!call give_all_mos_at_r(r1,mos_array_r1)
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!call give_all_mos_at_r(r2,mos_array_r2)
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call give_all_act_mos_at_r(r1,mos_array_r1)
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call give_all_act_mos_at_r(r2,mos_array_r2)
|
2016-04-17 23:30:04 +02:00
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do l = 1, n_act_orb ! p2
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do k = 1, n_act_orb ! h2
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do j = 1, n_act_orb ! p1
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do i = 1,n_act_orb ! h1
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2016-04-18 20:49:49 +02:00
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double precision :: contrib_tmp
|
2016-04-21 23:59:50 +02:00
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! print*,'i,j',i,j
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! print*,mos_array_r1(i) , mos_array_r1(j)
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! print*,'k,l',k,l
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! print*,mos_array_r2(k) * mos_array_r2(l)
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! print*,'gama = ',two_body_dm_ab_big_array(i,j,k,l)
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|
! pause
|
2016-04-18 20:49:49 +02:00
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contrib_tmp = mos_array_r1(i) * mos_array_r1(j) * mos_array_r2(k) * mos_array_r2(l)
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|
|
compute_extra_diag_two_body_dm_ab += two_body_dm_ab_big_array(i,j,k,l) * contrib_tmp
|
2016-04-17 23:30:04 +02:00
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enddo
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enddo
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enddo
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enddo
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|
end
|
2016-04-18 20:49:49 +02:00
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|
|
double precision function compute_diag_two_body_dm_ab(r1,r2)
|
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|
|
implicit none
|
|
|
|
|
double precision :: r1(3),r2(3)
|
|
|
|
|
integer :: i,j,k,l
|
|
|
|
|
double precision :: mos_array_r1(mo_tot_num),mos_array_r2(mo_tot_num)
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|
|
|
|
double precision :: contrib,contrib_tmp
|
|
|
|
|
compute_diag_two_body_dm_ab = 0.d0
|
|
|
|
|
call give_all_act_mos_at_r(r1,mos_array_r1)
|
|
|
|
|
call give_all_act_mos_at_r(r2,mos_array_r2)
|
|
|
|
|
do l = 1, n_act_orb !
|
|
|
|
|
contrib = mos_array_r2(l)*mos_array_r2(l)
|
|
|
|
|
! if(dabs(contrib).lt.threshld_two_bod_dm)cycle
|
|
|
|
|
do k = 1, n_act_orb !
|
|
|
|
|
contrib_tmp = contrib * mos_array_r1(k)*mos_array_r1(k)
|
|
|
|
|
! if(dabs(contrib).lt.threshld_two_bod_dm)cycle
|
|
|
|
|
compute_diag_two_body_dm_ab += two_body_dm_ab_diag(k,l) * contrib_tmp
|
|
|
|
|
enddo
|
|
|
|
|
enddo
|
|
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|
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|
|
|
end
|
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